Posted by Michigan A on March 28, 2009 at 08:26:36 from (66.19.17.59):
I have owned this 640 with 6 volt, positive ground for over 2 years and it has always charged fine. Over the winter I had it in the pole barn with the sheet metal off and noticed the old wiring was cracked and bare in several places. I replaced the wires one by one using the wiring diagram. Wiring to the regulator was fairly easy with the hood off. The old battery was weak so I got a new 6 volt. I don't have any lights or light switch. The old ignition switch had to be replaced, so I got a new one from TSC. With new battery in, new switch, and wiring in I polarized the field to pos ground. Now when I start it up it charges about +8 and runs fine but after about 1 minute I see a small amount of smoke out of the regulator. Any ideas about most likely cause? I think the wiring is correct as I double checked each connection carefully. Thanks in advance for any ideas or suggestions!
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